logo
Thread Tools
Old 10-06-2019, 07:29 PM
closetguy is offline
Find More Posts by closetguy
Registered User
United States, OH, Berlin Heights
Joined Jul 2006
4,874 Posts
Yeah,the very first 72's had nylon washers on both sides of wristpin,between the rod and piston.They didn't last long at all,just a few tanks of fuel through them and they were gone.I bought mine from DJ Power and told him the problem and he sent me metal washers and parts to repair it.After that all the 72's had metal washers and no more problems.It is a great 3D engine with it's quick throttle response and torque.
Wonder if the 144 will have the same qualities.
closetguy is offline Find More Posts by closetguy
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 10-07-2019, 08:08 AM
Cycletech is offline
Find More Posts by Cycletech
CycleTech
Cycletech's Avatar
United States, CT, Greenwich
Joined Jun 2019
145 Posts
Quote:
Originally Posted by closetguy View Post
Yeah,the very first 72's had nylon washers on both sides of wristpin,between the rod and piston.They didn't last long at all,just a few tanks of fuel through them and they were gone.I bought mine from DJ Power and told him the problem and he sent me metal washers and parts to repair it.After that all the 72's had metal washers and no more problems.It is a great 3D engine with it's quick throttle response and torque.
Wonder if the 144 will have the same qualities.
Engines designed using washers on the wrist pin dont have thrust washers on lower rod journal and support from latteral movement of the rod and destroying lower rod bearing and crank pin. I can see how this would have been a big cause of failers. Ive built a bunch of Suzuki LT500R motors in my shop with blown cranks and when I go to rebuild the crabkshafts most have been found to have had pistons replaced at one time and the "thrust washers" missing from the wrist pin as this model has that design. Most others the thrust washers are at the bottom of the rod.
Cycletech is offline Find More Posts by Cycletech
Reply With Quote Quick reply to this message
Old 10-07-2019, 08:14 AM
Cycletech is offline
Find More Posts by Cycletech
CycleTech
Cycletech's Avatar
United States, CT, Greenwich
Joined Jun 2019
145 Posts
Quote:
Originally Posted by 3DJP View Post
Werenít the DJ 72ís having problems... we had one at the field didnít make it through a gallon before it let loose.. but for your sake Cycletech I hope it holds up.. howís the guys up north treating you! Iím gonna make my way up again and fly
Heck yeah J look forward to seeing you again!
Cycletech is offline Find More Posts by Cycletech
Reply With Quote Quick reply to this message
Old 10-07-2019, 08:14 AM
ghoffman is online now
Find More Posts by ghoffman
Registered User
ghoffman's Avatar
New Hampshire, USA
Joined Nov 2009
8,064 Posts
Can you weigh it please (engine alone)?
ghoffman is online now Find More Posts by ghoffman
Reply With Quote Quick reply to this message
Old 10-07-2019, 08:42 AM
Cycletech is offline
Find More Posts by Cycletech
CycleTech
Cycletech's Avatar
United States, CT, Greenwich
Joined Jun 2019
145 Posts
Quote:
Originally Posted by ghoffman View Post
Can you weigh it please (engine alone)?
I would but I let someone barrow my digital scale months ago and I never went to get it back. Lol!
Cycletech is offline Find More Posts by Cycletech
Reply With Quote Quick reply to this message
Old 10-07-2019, 04:58 PM
3DJP is offline
Find More Posts by 3DJP
Registered User
United States, NJ, Penns Grove
Joined Dec 2015
1,074 Posts
Quote:
Originally Posted by ghoffman View Post
Can you weigh it please (engine alone)?
2510g no muffs no ignition.. the very first post in this thread has a whole rundown of info if you wanna take a look.
3DJP is offline Find More Posts by 3DJP
Reply With Quote Quick reply to this message
Old 10-08-2019, 06:30 PM
airboss/oc is offline
Find More Posts by airboss/oc
desert racer
airboss/oc's Avatar
United States, CA, Orange County
Joined Aug 2007
6,198 Posts
i'm thinking a new DJ144 in a Flexx Mamba 120. having more power is always beneficial if it fits
airboss/oc is offline Find More Posts by airboss/oc
Reply With Quote Quick reply to this message
Old 10-08-2019, 07:04 PM
ghoffman is online now
Find More Posts by ghoffman
Registered User
ghoffman's Avatar
New Hampshire, USA
Joined Nov 2009
8,064 Posts
Quote:
Originally Posted by airboss/oc View Post
i'm thinking a new DJ144 in a Flexx Mamba 120. having more power is always beneficial if it fits
Well, that is the point of a 144 over a 120! But is it more powerful than a GP-123 or DA-120? My 2011 vintage DA-120 turns a Falcon 28-9.5 at 6700 on quiet MTW -75 cans.
ghoffman is online now Find More Posts by ghoffman
Reply With Quote Quick reply to this message
Old 10-08-2019, 11:06 PM
airboss/oc is offline
Find More Posts by airboss/oc
desert racer
airboss/oc's Avatar
United States, CA, Orange County
Joined Aug 2007
6,198 Posts
DJ claimed 28-10 8000rpm
airboss/oc is offline Find More Posts by airboss/oc
Reply With Quote Quick reply to this message
Old 10-09-2019, 01:01 AM
maki is online now
Find More Posts by maki
Registered User
Slovenia, Logatec
Joined Nov 2010
115 Posts
wait for real tests...
maki is online now Find More Posts by maki
Reply With Quote Quick reply to this message
Old 10-09-2019, 04:47 AM
closetguy is offline
Find More Posts by closetguy
Registered User
United States, OH, Berlin Heights
Joined Jul 2006
4,874 Posts
Their 72 only had the power of a good running 60.They were suppose to do some improvements on it but I haven't seen any real world numbers yet.
8000 0n a 28-10 it will be a popular 144 engine if it does.
closetguy is offline Find More Posts by closetguy
Reply With Quote Quick reply to this message
Old 10-09-2019, 06:09 AM
rmasek is online now
Find More Posts by rmasek
Registered User
rmasek's Avatar
United States, OH, Cleve
Joined Feb 2010
309 Posts
didn't the specs. for prop say 26x10-27x10 no mention of larger props.
rmasek is online now Find More Posts by rmasek
Reply With Quote Quick reply to this message
Old 10-09-2019, 06:11 AM
ghoffman is online now
Find More Posts by ghoffman
Registered User
ghoffman's Avatar
New Hampshire, USA
Joined Nov 2009
8,064 Posts
I assume that is with the stock “mufflers”? A 28-10 at 8K with stocks would be ear splitting and not be allowed to fly a second time. A 29-10 might be more appropriate.
ghoffman is online now Find More Posts by ghoffman
Reply With Quote Quick reply to this message
Old 10-09-2019, 08:13 AM
closetguy is offline
Find More Posts by closetguy
Registered User
United States, OH, Berlin Heights
Joined Jul 2006
4,874 Posts
In reality it should be compared to a 150, and the props they use,and not the 120 class. But maybe it will be used in 120 class of planes,do guy's use 150's in 35% planes,It's been out for a while and there's not much info on props and rpm on it.Time will tell.
closetguy is offline Find More Posts by closetguy
Reply With Quote Quick reply to this message
Old 10-09-2019, 08:52 AM
JoeT is online now
Find More Posts by JoeT
Racer, Flyer, Dad!
JoeT's Avatar
Canada, ON, Vaughan
Joined Oct 2013
1,214 Posts
Lots of great stuff out or coming out.

The 144 is supposed to bolt up to 120 size airframes. Same with the DLE130 let the takeoff begin "A La Quisine"!! (Iron chef)

Having instant torque, better Downline braking are all great, I'd love to put on larger props on my 120 cc airframes and not lose on transition.
JoeT is online now Find More Posts by JoeT
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools